A 70-year-old man was killed in a crash in Martinez this morning, according to the California Highway Patrol.
The Bay Point resident was driving a 1995 Saturn Sedan west on state Highway 4 when for unknown reasons the car left the roadway east of Interstate Highway 680 at about 2:15 a.m., the CHP said.
The vehicle crashed through brush at the side of the road, through a chain link fence and down into Grayson Creek.
The driver was pronounced dead at the scene.
There were no other occupants in the vehicle.
He was believed to be wearing his seatbelt at the time, the CHP said.
It has not been determined if drugs or alcohol were factors in the crash, which remains under investigation by the CHP.